Electric brush



FIG. 1 is a bottom, front, left side perspective view of the electric brush showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan thereof.

The port drawn in broken lines on the bottom surface of the electric brush (shown in FIGS. 1 and 6) forms no part of the claimed design. 

CLAIM The ornamental design for an electric brush, as shown and described. 